Based on evolutionary relationship, the desert cottontail rabbits, sea otters, and grizzly bears share common features because they had a common ancestor, but environmental factors caused only grizzly bears and sea otters have canine teeth.
What is evolution?
Evolution is the sum total of adaptive changes that occur in organisms which result in the diversity of form, structure and function among living organisms.
The desert cottontail rabbits, sea otters, and grizzly bears share common features because they had a common ancestor.
However, due to environmental influences, the grizzly bears and sea otters have canine teeth.
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